1. Molecular Photonics Laboratory, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K.
2. Crystallography Laboratory, School of Natural and Environmental Sciences, Newcastle University,
Bedson Building, Newcastle upon Tyne NE1 7RU, U.K.
3. NMR Laboratory, School of Natural and Environmental Sciences, Newcastle University,
Bedson Building, Newcastle upon Tyne NE1 7RU, U.K.